Two-component composition

1. Two-component composition comprising

a) a first component A, comprising

between 50% and 100% by weight of at least one silane-functional polymer P selected from formula (II), and/or (III)

wherein

radicals R 1 and R 2 independently represent a linear or branched monovalent hydrocarbon radical having 1 to 10 carbon atoms;

radical R 4 represents a linear or branched divalent hydrocarbon radical having 1 to 6 carbon atoms and optionally containing one or more heteroatoms;

radical R 5 represents a dialkyl succinate radical;

radical R 6 represents a divalent aliphatic hydrocarbon radical having 1 to 15 carbon atoms;

radical R 7 represents a hydroxyl-terminated polyether or polyurethane polymer after removal of p hydroxyl groups;

radical R 8 represents a divalent linear, branched, or cyclic hydrocarbon radical having 1 to 15 carbon atoms and optionally containing heteroatoms;

n represents an integer having a value of 2 or 3;

m represents an integer having a value of 3-n;

p represents an integer having a value of at least 2; and

between 0% and 50% by weight of at least one plasticizer; and between 0% and 10% by weight of at least one organosilane OS; and between 0% and 5% by weight of at least one drying agent;

wherein component A does not contain filler and component A is essentially free of catalyst for catalyzing hydrolysis and/or condensation of organosilanes and wherein the amounts of all individual components comprised in component A are adjusted such that their sum equals 100%;

and

b) a second component B, comprising

between 0.05% and 4% by weight of a catalyst for catalyzing hydrolysis and/or condensation of organosilanes; and

between 25% and 75% by weight of at least one filler; and

between 0% and 60% by weight of at least one plasticizer; and

between 0% and 0.5% of at least one stabilizer;

wherein the amounts of all individual components comprised in component B are adjusted such that their sum equals 100%;

wherein the mixing ratio by weight of component A to component B is between 1:2 and 1:4, and

wherein the two components A and B are produced separately, stored in separated packages, and combined only immediately before application.

2. The two-component composition according to claim 1 , wherein said radical R 6 represents an isophorone diisocyanate radical after removal of two isocyanate groups.

3. The two-component composition according to claim 1 , wherein said radical R 1 represents a methyl or ethyl radical.

4. The two-component composition according to claim 1 , wherein said radical R 5 represents a diethyl succinate radical.

5. The two-component composition according to claim 1 , wherein the cured composition of the two components A and B passes the durability test according to Japanese Industrial Standard JIS A 5758:2010 and reaches classification 9030.

6. The two-component composition according to claim 1 , wherein component A comprises between 50% and 100% by weight, based on the total weight of component A, of at least one polymer P, and between 0% and 50% by weight, based on the total weight of component A, of at least one plasticizer, and between 1% and 5% by weight, based on the total weight of component A, of at least one organosilane OS, wherein the amounts of all individual components comprised in component A are adjusted such that their sum equals 100%.

7. The two-component composition according to claim 1 , wherein component B comprises between 25% and 75% by weight, based on the total weight of component B, of at least one filler, and between 0.05% and 4% by weight, based on the total weight of component B, of at least one catalyst for catalyzing hydrolysis and/or condensation of organosilanes, and between 15% and 50% by weight, based on the total weight of component B, of at least one plasticizer, and between 0% and 0.4% by weight, based on the total weight of component B, of at least one stabilizer, wherein the amounts of all individual components comprised in component B are adjusted such that their sum equals 100%.

8. The two-component composition according to claim 1 , wherein said catalyst for catalyzing hydrolysis and/or condensation of organosilanes comprises a metal salt or complex, and an aliphatic, cycloaliphatic, or aromatic compound comprising at least one amine functional group.

9. The two-component composition according to claim 1 , wherein said organosilane OS comprises at least one vinylsilane and/or at least one aminosilane and/or at least one mercaptosilane and/or at least one glycidoxysilane and/or mixtures thereof and/or oligomeric products thereof.

10. The two-component composition according to claim 1 , wherein component B additionally comprises water.

11. A method comprising sealing, adhering, or coating with a two-component composition according to claim 1 .

12. The method according to claim 11 , wherein a substrate to be sealed, adhesively attached to another substrate, or coated was not pretreated with a primer or adhesion promoter.

13. A cured or curing composition obtained by combining component A and component B of the two-component composition according to claim 1 and mixing them by using a static or dynamic mixing system and applying the mixture to a substrate.

14. The two-component composition according to claim 1 , wherein at least one silane-functional polymer P of formula (II) is present.

15. The two-component composition according to claim 1 , wherein at least one silane-functional polymer P of formula (III) is present.